Looks like it was one day only, but I would have missed the deal without the thread, so . Been waiting to grab it ever since I saw it had gone to GG, though I figured I'd have to wait until the summer sale.
Been checking out some of Das' Lets Play on it on youtube, since I only ever played the demo previous to this -- and that was a long time back. A lot of good info there, if others are like me and in the rank beginner section of seating for the game. Anyways, looking forwards to putting some time into it finally.